20857788

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{2237}}^1$

素因数の和:2291

約数の個数: 72

約数和(自身を含む): 61912032

約数和(自身を除く): 41054244

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 37, 42, 63, 74, 84, 111, 126, 148, 222, 252, 259, 333, 444, 518, 666, 777, 1036, 1332, 1554, 2237, 2331, 3108, 4474, 4662, 6711, 8948, 9324, 13422, 15659, 20133, 26844, 31318, 40266, 46977, 62636, 80532, 82769, 93954, 140931, 165538, 187908, 248307, 281862, 331076, 496614, 563724, 579383, 744921, 993228, 1158766, 1489842, 1738149, 2317532, 2979684, 3476298, 5214447, 6952596, 10428894, 20857788]

約数ペア:

[(1, 20857788), (2, 10428894), (3, 6952596), (4, 5214447), (6, 3476298), (7, 2979684), (9, 2317532), (12, 1738149), (14, 1489842), (18, 1158766), (21, 993228), (28, 744921), (36, 579383), (37, 563724), (42, 496614), (63, 331076), (74, 281862), (84, 248307), (111, 187908), (126, 165538), (148, 140931), (222, 93954), (252, 82769), (259, 80532), (333, 62636), (444, 46977), (518, 40266), (666, 31318), (777, 26844), (1036, 20133), (1332, 15659), (1554, 13422), (2237, 9324), (2331, 8948), (3108, 6711), (4474, 4662)]